This mod is an addon to the 'Runesword' mod, adding different dimensions based on the different runes from Runesword. Note that this mod is still in early development, and currently only two dimensions are added, the Blood World and the Fire World. The most recent update adds a new enemy, the blood knight, as well a a new decorative block, the chalice.
You travel to the worlds by creating a portal, similar to a nether portal, but instead of lighting it with flint and steel, you light it with a rune from Runesword. But beware, no portal is generated on the other side, so bring obsidian and an extra rune or you might be stuck in a rune world forever!
Below are a few videos showcasing the mod:
Here is a short video showcasing the original release of the mod: